AC Speedtech have a well-earned reputation for building some of the best prepared Nissan VR38DETT engines in the UK.

Whether you are looking to future proof your engine with a ‘paranoia’ build, looking for something ground-breaking or have been unfortunate enough to have an engine fail? AC Speedtech have a solution.

We have tried most combinations of components on the market and will only use what we trust and are happy to measure our reputation against. We won’t compromise on cost over engineering. It has been proven time and time again to be a false economy to cut corners. For sure, that company down the road might be cheaper and quicker but are they building to the same specification using the combined experience at ACspeedtech?

Each ACSpeedtech engine is built in-house by our engineers. The only process that isn’t done at our Birchwood base is our balancing and machine work which we entrust to the best in country or even worldwide depending on what we require.

The specification, be it a ‘regular’ 800-1000hp VR38 build or more full-on 1800+hp spec, will be chosen through decisions between us and the customer about actually what you want from the motor, sometimes what you want and what you need are slightly different! We make sure you get exactly what you actually need and can of course work to a budget specified.

We of course have our ‘go to’ spec for different power levels that we know just work great, but there’s always personal tweaks to be made. Drop us an email or a call to start finding out what we can do for you.

Nissan GTR R35 Engine Tuning Specialists AC Speedtech

Our Partners.

Through many years of experience AC Speedtech have learned that a reliable supply chain and high-quality product are key to successful engine building. Therefore, we have selected to work with companies that we trust, be that just down the road or as far as America, Japan or Australia. Building good relationships over the years with these companies and friends means access to parts, information and an even larger wealth of experience is hugely treasured by us.

We use selected components from the manufacturers including:

  • Manley
  • Mahle
  • Carrillo
  • Callies
  • CP
  • Diamond
  • Tomei
  • GSC
  • Boostlogic
  • ETS
  • ARP
  • HKS
  • King Bearings
  • ACL Bearings
  • Nissan (yes, some of their parts work very well!)